Hockey rink clipboard



FIG. 1 is a plan view of a hockey rink clipboard; and,

FIG. 2 is a side plan view of the clipboard.

The broken lines in FIGS. 1 and 2 are included for the purpose of showing portions of the hockey rink clipboard that form no part of the claimed design. 

CLAIM The ornamental design for a hockey rink clipboard, as shown and described. 